Stock-Based Compensation (Tables)

6 Months Ended

Oct. 26, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Components and Classification of Stock-based Compensation Expense

	Three months ended				Six months ended
	October 26,		October 28,		October 26,		October 28,
(in millions)	2012		2011		2012		2011
Stock options	$	16	$	21	$	27	$	36
Restricted stock awards		30		25		51		47
Employee stock purchase plan		3		3		7		7
Total stock-based compensation expense	$	49	$	49	$	85	$	90
Cost of products sold	$	4	$	4	$	7	$	7
Research and development expense		10		9		17		16
Selling, general, and administrative expense		35		36		61		67
Total stock-based compensation expense	$	49	$	49	$	85	$	90
Income tax benefits		(14)		(15)		(24)		(26)
Total stock-based compensation expense, net of tax	$	35	$	34	$	61	$	64